Coolant Water Filler Neck For Toyota Yaris Vios Scion XD
Maintain consistent engine thermal regulation with a direct-fit Coolant Water Filler Neck engineered as a replacement for aging OEM cooling pathways. This component resolves frequent issues like cracked overflow tubes, leaking radiator connections, and loss of system pressure that typically degrade performance over time. Built from PA66+GF30 reinforced polyamide, the nozzle delivers enhanced heat resistance and structural rigidity compared to standard factory plastics, ensuring a stable seal when mated with the radiator cap and thermostat housing pipe.
Practical Installation & Maintenance Tips
- Verify dimensional compatibility by comparing your existing unit against OEM identifier 16502-21070 before removing the old part.
- Clean mating surfaces thoroughly and inspect surrounding hose clamps for corrosion to prevent post-installation seepage.
- Run the engine briefly after fitting to bleed trapped air from the upper cooling loop and confirm stable temperature readings on the dashboard gauge.
Detailed Specifications
Designed for precise dimensional tolerance and long-term chemical resistance in demanding driving environments.
- OEM Cross-Reference: 16502-21070, 1650221070, 16502 21070
- Primary Material: PA66+GF30 Composite Polymer
- Vehicle Placement: Upper coolant intake connecting via radiator cap assembly
- Compatible Platforms: 2006-2014 Toyota Yaris (NCP91 1.5L 1NZ), 2006-2014 Toyota Vios (NCP92/NCP93 1.3L/1.5L 1NZ/2NZ), 2007-2014 Scion xD (ZSP110 1.8L 2ZR)
- Manufacturer Origin: Mainland China
The package includes one brand new Coolant Water Filler Neck.
Fitness Verification Reminder
Cooling system hardware requires exact matching of manufacturer part numbers to maintain proper fluid circulation. Double-check the original numbering on your vehicle's existing filler tube prior to finalizing your purchase to avoid incorrect fitment for your specific engine code.
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